The Ugandan Revenue Authority is under investigation for corruption and inefficiency at every level. Investigators say agency officials have been diverting state money into their private bank accounts and helping businesses evade millions of dollars worth of taxes.

The investigation was launched by the Finance Ministry in March in the wake of a public outcry. Officials say it’s a major step in efforts to clean up Uganda’s image as one of the most corrupt countries in the world.

Nobert Mao is an opposition MP and a member of the parliamentary public accounts committee. From Kampala, he spoke with English to Africa reporter Richard Kotey about corruption in Uganda.